Whistle-operating mechanism



March 24, 1925.

F. J. PARSONS WH I STLE OPERATING MECHANI SM Filed Dec. 2. 192g Ill W SIIWENTOR 14 TTORNEYQ Patented Mar. 24, 19 25 UNITED STATES PATENTOFFICE.

FORREST J. PARSONS, F LIMA, OHIO.

WHISTLE-OPERATING MECHANISM.

Application filedDecember 2, 1922. Serial No. 604,460.

citizen of the United States, residing at Lima, in the county of Allenand State of Ohio, have invented certain new and useful Improvements inWhistle-Operating Mechanism, of which the following is a specification.F

This invention relates to mechanism for operating whistles and isparticularly useful in connection with the steam whistles onlocomotives.

It has for its principal object the provision of a simple and etlicientmotor actuating means for application to the usual whistle rigging. Morespecifically stated. it has for its object the provision of a fluidactuated mechanism for operating the whistle which can be convenientlyapplied directly to existing equipment without the necessity of alteringor dispensing with any of the usual whistle parts. This makes itpossible to operate the whistle by hand should occasion arise.

A further object of the invention is to provide a convenientlyadjustable whistle actuating motor means which can be movably mountedadjacent the usual whistle lever or in fact one which could be pivotallysupported adjacent said lever upon the same pin which fulcrums the leveritself.

Still another object of the invention is the provision of a valve forcontrolling the motor means which can be located at a convenient pointwithin the cab within easy reach of the engineer, there being a connection between this controlling valve and the motor means adjacent thewhistle lever, this valve being so designed as to enable the engineer togive a mild blast of the whistle or a heavy blast as occasions orconditions demand Further objects of'the inventiomwill appearv inconnection with the description of the accompanying drawing wherein:

Fig.1 is a partial side elevation of the rear end of a. locomotiveillustrating my improved whistle operating mechanism applied thereto;Fig. 2 is a vertical central section 011 a greatly enlarged scalethrough my improved controlling valve; and Fig. 3 'is a fragmentary sideelevation on an enlarged scale of the whistle itself showing my improvedmotor means thereto.

It is of course unnecessary to limit my invention to use in connectionwith a l0'como in section applied tive I whistle although it isparticularly adapted for this purpose and I have chosen to illustrate itin preferred form in such an association. The whistle A is applied nearthe top of the boiler 1 and can be sounded by pulling rearwardly on theoperating whistle lever2. The lever is pivoted upon the pin 3 and whenmoved as aforesaid it depresses the stem of the valve 4 therebypermitting steam to pass up from the boiler into the body of the whistleA. The usual hand operating cord 5 extends back into the cab 6.

' The motor means B for operating'the whistle comprises a cylinder 7having a cap 8 and a piston 9 with a projecting stem10 mounted forreciprocation in the cylinder, and for loosely engaging the lever 2.Such loose connection leaves the lever 2 free for independent manualoperation. The cylinder is provided with a threaded extension 11 overwhich is placed the free end of a supporting bracket 12. A nut 13 can be.screwed up against the bracket '12 to hold the entire motor means B inplace.

Air is supplied to the left of the piston 9 through the pipe 14. Thisair moves the piston and its plunger to the right, the air to the rightof the piston exhausting through the exhaust ports 15. The stem 10 comesagainst the lever 2and pushes it rearwardly to open the whisle valve 4in the manner already indicated.

The bracket 12 is preferably welded along its bottom leg 16 to the motorsupporting member 17 which is'pivotcd to the pin 3 uponwhich the lever 2operates. A threaded v adjusting bolt 18 passes down through the outerend of the supporting member 17 to sustain the latter. This bolt 18isadapted to contact with the shell of the boiler 1 and can be set in anydesired position and then locked by means of the lock nut 19. Byscrewing the bolt 18 up or down it is possible to'alter the relationbetween the stem of the motor means and the lever 2. Inthis way properadj ustmeut tosuit all conditions vided with a threaded extension 29 bymeans of which the operatin valve as a whole may be secured in anyesired position.

The valve 27 is normally held in closed position by means of thespring-3O so that fluid which can be supplied from any suitable source(not shown) cannot pass from the inlet 23 to the outlet ipe 14 or theexhaust port 24. When it is desired to blow the whistle theenginemanpushes down uponthe enlarged head '31 of the combined operating plungerand valve'28 and thereby opens the valve 27. Fluid pressure immediatelyflows through the outlet 14 and can also flow through the exhaust port24 until such time as the engineman forces the valve 28 against its seat32. Upon releasing the pressure upon the head 31 spring will again closethe valve 27 and the air in the pipe 14 and in the cylinder of the motormeans B can exhaust through the port 24.

It will of course be understood that after the whistle has been soundedand pressure.

' released 'from the left hand side of the operating piston 9 the lever2 will force this piston to the left under the effect of the steam.pressure acting upon the undersideof the valve 4.

It will be noted that the wholemechanism is very simple and that it caneasily be apthe normal hand. operation thereof. It

should also be notedthat the general arrangement of the controllingvalve C makes it possible for the engineer to give either a 2 mild or aheavy blast of the whistle as may be necessary. If the plunger 28 bepushed only part way down the operating fluid will flow partly throughthe pipe 14 to the operating cylinder and partly through the exhaust orbleed port 24 to the atmosphere, so

that the operating lever of the whistle will be actuated togive but amild blast. But if the plunger be moved all the'way down, the

valve atits base will close off exhaust to the.

, I claim:

1. The'combination with a steam whistle and its operating lever, ofmotor means for actuating the lever, means for supporting the motormeans pivoted ata point on the whistle rigging, and means for adjustingthe supportlng means to alter the operative relation between motor meansand whistle operating lever.

2. The combination with a steamwhistle and its operating lever, of motormeans'for actuatingthe lever, means for supporting the motor means, acommon pin upon which lever and motor supporting means are pivoted, andmeans for adjusting the motor supporting means to alter the operativerelation between motor means and lever.

3. As an article of manufacture, an operating device for a steam whistlecomprising a support mountable on the pivot of the whistle lever, afluid motor thereon with an actuating member for engaging said lever andmeans for sustaining said support an adjusting it about the lever pivotto vary the relation of the motor to the lever.

4. The combination of a whistle, apiv oted operating lever therefor, apull connection for manually rocking the lever, and a power motor forrocking the lever having a movable member adapted to bear against thelever at a point removed'from th'e pivot,

the pull connection and the motor being wholly independent of oneanother to permit operation by either.

In testimony whereof I have hereunto signed my name.

FORREST vJ. PARSONS.

